Add arities that behave as partials of ->T
Partion & clean filesystem api
Bumped version to 0.3.0
Merge branch 'release/0.3.0'
Merge tag '0.3.0' into develop

Release 0.3.0

This release cleans up the filesystem API some, enabling clients to
selectively load only the reading and writing components as well as
cleaning up the names for these components.